Question

a 4 in. by 5 in. photo is enlarged so that its width (shorter dimension) is 5 in. what is the length of the enlarged photo? 7 in 6 in 6.25 in 5.25 in

Explanation:

Step1: Set up proportion

Since the photo is enlarged proportionally, we have the ratio of original width to original length equal to the ratio of new width to new length. Let the new length be $x$. The proportion is $\frac{4}{5}=\frac{5}{x}$.

Step2: Cross - multiply

Cross - multiplying gives us $4x = 5\times5$. So, $4x=25$.

Step3: Solve for $x$

Dividing both sides by 4, we get $x=\frac{25}{4}=6.25$.

Answer:

C. 6.25 in